Magento 2 Intall Error at Module Magento_Indexer

[huntj06]

Installing Magento 2 via the Web GUI and when the installer hit's 36% I get the following error message and the installer aborts.

Module 'Magento_Indexer':
Running recurring.. 
[ERROR] exception 'Magento\Framework\Exception\LocalizedException' with message 'A method by name offsetUnset already exists in this class.' in /home/xpressdecals/public_html/shop/vendor/magento/framework/Code/Generator.php:103
Stack trace:
#0 /home/xpressdecals/public_html/shop/vendor/magento/framework/Code/Generator/Autoloader.php(35): Magento\Framework\Code\Generator->generateClass('Magento\\Store\\M...')
#1 [internal function]: Magento\Framework\Code\Generator\Autoloader->load('Magento\\Store\\M...')

This is a new Magento 2 install.. I've tried to do a complete reinstall multiple times (delete directory, db, then start over) with no success so far, all the installs fail on this step.

The readiness check comes back clean as well. 

[maddyC]

Can you please give us some details

- OS, PHP version, and server

- How are you deploying Magento? 

- Have you followed all instructions re file permissions 

[huntj06]

PHP 5.5.30
CentOS 6.5

Installing via the WebGUI.. the readiness checks all come out green "ok". .

[maddyC]

Can you please post output of phpinfo();

[subhramanna2000]

phpinfo:

http://megasuperstores.knockingdoorbrand.com/index1.php

same problem in http://megasuperstores.knockingdoorbrand.com/index.php

[Dmitry_Fedyuk]

Please execute the php -v command from the command line standing in the Magento 2 root folder.